TWI709281B - Plug contact set and method for checking a latching of the plug contact set - Google Patents

Abstract

Plug contact set, comprising a plug contact strip (17) having several first contact elements (12, 14), at least one of which contact elements (12, 14) being formed in a plugging direction (S) as a checking contact (14) having a smaller length than the remaining contact elements, and having a plug connector having several second contact elements (22), at least one of which contact elements (22) being set up to electrically make electric contact with the checking contact (14), wherein at least one first latch element (31, 51) and at least one second latch element (32) are set up to latch with one another when the first contact elements (12, 14) are completely contacted by the second contact elements (22), and wherein a third latch element (33, 53) is provided that is arranged to be spaced apart from the first latch element (31) in the plugging direction (S).

Description

Plug contact group and method for checking locking of plug contact group

The present invention relates to a plug contact group. The plug contact group includes a plug contact piece. The plug contact piece has a plurality of first contact elements formed as a component of a circuit board and arranged on the circuit board In the edge area, the plug contact piece has a plug connector, the plug connector has a second contact element, and the plug connector is formed as a circuit board in-line connector. The invention also relates to a method for checking the locking of at least one locking element of a plug contact piece and at least one locking element of a plug connector.

The circuit board in-line connector is directly mounted on the corresponding plug contact piece formed on the edge of the circuit board. In this way, for example, plug contact pieces that are also arranged on the circuit board and electrically contact the corresponding contact elements on the circuit board are avoided. Instead, the corresponding contact elements on the circuit board itself form the corresponding components of the circuit board in-line connector.

This circuit board in-line connector is also used in assembly groups that are used extensively in modern motor vehicles. During vehicle operation, such plug connections are subject to considerable loads, such as shaking loads, vibration loads, and the like. Due to such loads, the plug connector may be detached from the plug contact piece, resulting in loss of electrical contact. In order to prevent this, the plug connector and the corresponding corresponding components (such as the plug contact piece) must be provided with a locking element to prevent the plug connector from being unintentionally detached from the plug contact piece or the edge of the circuit board. When assembling the plug connector, the locking elements are locked together in order to produce a connection between the plug connector and the corresponding corresponding component (ie, for example, the plug contact piece or the circuit board), which cannot be used in a motor vehicle. The load separation that occurs.

Due to assembly errors, the plug connector may be inserted into the so-called half insertion of the plug contact piece. Here, the electrical contact between the plug contact of the plug contact piece and the plug contact of the plug connector does occur, but the engagement of the locking element does not occur. Due to the tight spatial arrangement of plug contact groups in motor vehicles, such half-insertions are usually not visually recognizable. There is no way to detect half-insertion by measuring the current between the plug contact piece and the plug connector, because there is electrical contact between the plug connector and the plug contact piece, and the electrical contact cannot be used with the required full insertion. the difference. The lost electrical contact between the plug connector and the plug contact piece can only occur during the operation of the motor vehicle. The lost electrical contact is indeed detected by the on-board diagnostics (OBD) of the motor vehicle, but It can only be refurbished in the workshop. In order to be able to detect this half-insertion, it is now proposed to form at least one plug contact as a so-called inspection contact, which has a smaller length than the remaining plug contacts. The check contact only makes electrical contact with the corresponding plug contact in the plug connector when it is fully inserted (that is, when the plug connector and the plug contact piece are fully inserted). In order to ensure this full insertion even for a long time, a first locking element and a second locking element are provided when this full insertion occurs, the first locking element and the second locking element being locked to each other. Such plug contact groups appear in, for example, EP0314949A1. Therefore, the correct insertion is determined by checking whether the energization of the check contact or the corresponding plug contact in the plug contact piece can be detected in the corresponding contact of the corresponding component (that is, the plug connector or the plug contact piece). Only when the current can be detected, the correct insertion can be assumed.

The plug contact groups have a longitudinal gap of about 0.9 mm to 1.00 mm. At the beginning of insertion, that is, when the maximum longitudinal gap is utilized, the plug connector and the plug contact piece are locked to each other through the first and second locking elements, and indeed all plug contacts are in conductive contact, but check that the contacts are not in conductive contact . The longitudinal clearance is required to compensate for the tolerances of the leaf contact elements and spring contact elements that form the inspection contacts. During assembly, the plug connector is pushed onto the contact piece. In doing so, the plug connector must be pushed to the base of the plug contact piece. In this case, all plug contacts and check contacts are in correct electrical contact. In this case, the term electrical "correct contact" can not only be understood as the accidental touch of two contact elements (such as the tip of the blade contact element and the spring contact element), but also can be understood as complete contact, such as complete movement through the blade contact element Into the spring contact element. Now, it can happen that the plug connector in the longitudinal gap is slightly detached from the plug contact piece again during the assembly process, because of, for example, a cable or the like that caused the plug connector to be pulled to. This may also happen after the plug connector is correctly inserted. When the plug connector has therefore been separated from the plug contact strips to the point where the longitudinal gap has been fully used, it happens that the check contacts of the plug connector are no longer conductively connected to the corresponding plug contacts of the plug contact strips. In this case, the above-mentioned defect is alerted, and the defect is marked as a so-called quasi-error during production. These defects are called "quasi-errors" because there is actually no error, because in this case the plug contacts (that is, the practical contacts) are all connected correctly, except for the check contacts. During the assembly process, this was indeed judged as an error. Such errors are therefore particularly destructive and disadvantageous, because even when the plug contact group is visually inspected, since the locking elements are indeed locked to each other, the correct insertion can be detected. This kind of wrong contact is particularly destructive during the assembly process, because the wrong contact that delays the assembly process is warned during the assembly process.

According to the invention, a third locking element is therefore provided for the plug contact group, which is locked to the second locking element according to the first variant of the invention, or locked to the second variant according to the invention. The first locking element. This third locking element is arranged to be spaced apart from the first locking element in the insertion direction in the first modification, and is spaced apart from the second locking element in the second modification, so that the One or the second locking element is locked to achieve that the plug housing is fixed on the circuit board with the least gap in the full contact state of the first and second plug contacts.

In the first variant, it is provided here that the first and third locking elements are formed on the circuit board itself, while the second locking element is arranged on the housing of the circuit board in-line connector, and vice versa in the second variant, Only the first locking element is arranged on the circuit board, and the second and third locking elements are arranged on the housing of the circuit board in-line connector. However, the two solutions according to the present invention are of the same value, and only in the production of the locking element on the circuit board, there are substantial differences in the housing of the in-line connector or the components of the housing, respectively.

During the assembly process, the third locking element is used to ensure the stable contact between the inspection contact and the corresponding plug contact. The third locking element can also be locked to the first or second locking element, and the housing is as free as possible. The gap is fixed to the circuit board in a fully contacted state in which the first and second plug contacts are engaged, so it is possible to avoid false reports of non-contact inspection of the contacts due to the aforementioned gap. In addition, the housing is effectively prevented from being detached from the corresponding plug connector of the circuit board during operation of the vehicle, that is, the circuit board in-line connector is detached from the plug contact piece of the circuit board. The third locking element further ensures that the plug connector is completely inserted into the plug contact piece and maintained in this state. It is no longer necessary to "re-adjust" the plug connector in this way. For example, when a current interruption is detected on the inspection contact, the plug connector known in the prior art must always be re-adjusted. The first simple way to check whether the defect exists is to press the plug connector slightly harder on the circuit board again, which must be performed by the assembly personnel during the assembly process. This additional assembly process can be very disadvantageous, especially for many plug connectors to be assembled. Through the solution according to the present invention, when the third locking element is locked into the first or second locking element, it is ensured that the plug contacts are fully inserted and the circuit board in-line connector and the circuit board are connected to each other This way, even shaking loads and other mechanical loads will not cause the plug contacts to fall out of contact.

The first contact element is advantageously arranged on the circuit board. The contact elements arranged on the circuit board are preferably metal surfaces, which are arranged directly on the surface of the conductor tracks like conductor tracks, in particular adjacent to each other, and thus form plug contact pieces.

In addition, preferably, the first and third locking elements are formed in or on the circuit board as a part of the circuit board.

According to one embodiment, the first and third locking elements are each arranged on an edge which surrounds the insertion tongue transverse to the insertion direction, the insertion tongue being formed as part of the circuit board.

The insertion tongue can be arranged, for example, in an edge side recess of the circuit board. In pure principle, it is also conceivable that the insertion tongue protrudes beyond the circuit board.

According to an alternative embodiment, the first and third locking elements are provided as openings in the circuit board. In this case, the insertion tongue can be completely omitted, and for example the first and third locking elements are formed as holes in the circuit board, in particular adjacent to the edge of the circuit board.

In these cases, the second locking element is preferably arranged on a spring arm, which is arranged on the housing. The spring arms overlap the locking elements formed on the circuit board, or the spring arms are engaged with the locking elements during the insertion process, and fix the circuit board in-line connector housing on the circuit board after insertion .

According to a second variant of the invention, it is provided that the first locking element is formed as part of the circuit board. With this second solution according to the invention, it is provided that the second and third locking elements are arranged on the spring arms, which spring arms are arranged on the housing.

In all cases, the locking elements may preferably be formed as latch hooks. The locking hooks interact particularly advantageously with spring arms, which are elastically hinged inward to the locking element.

In pure principle, more than one inspection contact can be provided, especially for very long plug contacts with very many plug contacts. An advantageous embodiment provides exactly one inspection contact. Even if there is only one check contact, correct insertion can be checked. Therefore the remaining plug contacts can be used for other purposes.

Preferably, the inspection contact is arranged in the center of the contact piece. Sequentially, through this arrangement, it is determined whether the plug connector has been inserted into the contact pieces of the circuit board evenly, that is, not inclined or skewed but in parallel insertion. Only in this case will there be no current interruption.

As described above, the inspection contact has a smaller length than the other plug contacts in the plug contact piece. In contrast, the remaining plug contacts have almost the same length.

Therefore, the inspection contact is formed so short that when the at least one first locking element is not locked to the at least one second locking element, the inspection contact does not make electrical contact with the second plug contact. Doing so can determine whether the plug has been inserted correctly. The plug contact group advantageously has three locking points, a first locking point, a second locking point and a third locking point. At least one first locking element is locked with at least one second locking element in all three locking points, and therefore the first locking point is selected so that the second plug contact does not make electrical contact with the inspection contact. In the second locking point, at least one second plug contact is in electrical contact with the inspection contact, and in the third locking point, all the first and second plug contacts are in contact with each other and the two housing parts are fixed to each other together. Therefore, the second locking point is the one that usually represents correct insertion. The third locking point corresponds to the second locking point, but here it is absolutely ensured that all plug contacts are in contact with each other and the two housing parts are fixed so that there is almost no gap.

Preferably, the first contact element is a contact surface on the circuit board, and the second contact element is advantageously formed as a spring contact element, which in the contact state is placed on the contact element under preload.

The embodiments of the plug contact group according to the present invention can use two methods to check the locking of the at least one locking element to the at least one second locking element and the at least one third locking element. It can be distinguished here whether the plug contact piece is locked to the plug connector in a desired manner, or whether there is an unlocked half-insertion, which may be additionally caused by shaking loads or other mechanical loads.

In an embodiment of the method according to the present invention, the at least one first locking element is checked against the at least one second and third by checking that the contacts are energized and checking whether the current flows between the check contacts and the second plug contacts. Locking of the locking element. If such a current is detected, it is determined that there is a lock. Therefore, it is possible to energize the inspection contact or the second plug contact, which is provided for electrical contact with the inspection contact.

In FIGS. 1a to 1e, a first modification of the plug contact group made of the circuit board in-line connector 20 and the circuit board 10 is depicted. The circuit board 10 has a groove 70 on the edge 19 of the circuit board, and a protrusion arranged in the groove 70 in the shape of an insertion tongue 40, wherein the plug contact pieces 17 are sequentially arranged on the insertion tongue 40, the plug contact pieces Including inspection contacts 14 and plug contact elements 12. The inspection contact 14 and the plug contact element 12 are, for example, conductive surfaces on the surface of the circuit board 10. The circuit board in-line connector 20 has a housing 21 on which the spring arm 30 is elastically hinged toward the insertion tongue 40. At its lower end, the spring arm 30 has two locking hook-shaped second locking elements 32. The first locking element 31 is arranged around the insertion tongue 40 On the peripheral edge 41, perpendicular to the insertion direction S in each case. The third locking element 33 is arranged to be spaced apart from the first locking element 31 in the insertion direction S. Both the first locking element 31 and the third locking element 33 are formed as locking hooks, and the locking hooks are joined to form the locking hooks of the second locking element 32. In doing so, the spring articulation of the spring arm 30 proves to be particularly advantageous. The circuit board in-line connector 20 is pushed onto the insertion tongue 40 in the insertion direction S until the first locking element 31 and the second locking element 32 are locked. In this state, the plug contact element 12 is electrically connected to the corresponding contact element 22 of the circuit board in-line connector 20 formed as a spring contact element. The corresponding contact element 22 and the inspection contact 14 are not connected to conduct electricity.

The function of the inspection contact 14 will be explained below. However, first, an alternative plug contact group to the circuit board in-line connector 20 and the circuit board 10 will be described with reference to FIGS. 2a to 2e. Here, the same elements are provided with the same reference signs so that the description above can be referred to. However, compared to the solution depicted in FIGS. 1 a to 1 e, the third locking element 33 ′ is not arranged here on the edge 41 of the insertion tongue 40, but is arranged as a part of the spring arm 30. In this case, the third locking element 33' is spaced apart from the second locking element 32 with respect to the insertion direction S, and according to the first solution of the present invention, the third locking element is separated from the second locking element 32 in the insertion direction S. A locking element 31 is spaced apart.

2b and 2c sequentially show the insertion, where the plug contact element 12 is electrically connected to the corresponding contact element 22 of the circuit board in-line connector 20, but the inspection contact 14 is not electrically connected to the corresponding contact element 22.

In FIGS. 1d and 1e, the terminal positions are depicted in each case, in which the circuit board in-line connector 20 is fully inserted into the corresponding plug contact 17 of the circuit board 10. In this case, the second locking element 32 arranged on the spring arm 30 is locked to the third locking element 33 on the circuit board 10. In this state, all the plug contact elements 12 and the inspection contacts 14 are electrically connected to the corresponding contact elements 22 of the circuit board in-line connector 20.

In Figures 2d and 2e, the full insertion according to the second solution of the invention is depicted. In this case, the third locking element 33 ′ formed on the spring arm 30 is locked to the first locking element 31 formed on the circuit board 10.

In FIGS. 3a to 3e and 4a to 4e, the third or fourth exemplary embodiment of the plug contact according to the present invention is depicted.

The same elements are provided to have the same element symbols as in FIGS. 1a to 1e or FIGS. 2a to 2e so that reference can be made to the above description of these elements.

It can be seen from FIGS. 3a to 3e and FIGS. 4a to 4e that the plug contact element 12 and the inspection contact 14 are not arranged on the insertion tongue, but directly on the edge of the circuit board itself. Furthermore, the locking element is not arranged as a locking hook on the edge of the insertion tongue, but as an opening 51, 53 in the circuit board. Therefore, the first locking element 31 corresponds to the opening 51 in FIGS. 3a to 3e and the third locking element 33 corresponds to the opening 53 in FIGS. 3a to 3e. In other embodiments described in FIGS. 4a to 4e, the plug contact element 12 and the inspection contact 14 are also formed adjacent to each other on the edge of the board and form the plug contact piece 17. Here, the first locking element 61 is formed as The hole is extended, and the second and third locking elements 32, 33' are formed on the circuit board in-line connector 20 on the spring arm 30 arranged thereon. In the exemplary embodiment depicted in FIGS. 3a to 3e, the insertion process corresponds to those of the exemplary embodiment depicted in FIGS. 1a to 1e, and the exemplary embodiment depicted in FIGS. 4a to 4e The insertion process of almost corresponds to the insertion processes of the exemplary embodiment depicted in FIGS. 2a to 2e, so that reference will be made in this scope below.

The housing 21 of the circuit board in-line connector 20 according to FIGS. 1a to 1e and FIGS. 2a to 2e is slightly different from the circuit board in-line connector according to FIGS. 3a to 3e and FIGS. 4a to 4e. However, these are only constructive examples. The principle of the function is the same.

It can be seen from the drawing that the contact element 14 formed as the inspection contact (hereinafter simply referred to as the inspection contact 14) is formed shorter than the contact element 12 in the insertion direction S. The inspection contact is formed so as to be short enough to prevent electrical contact between the inspection contact 14 and the corresponding contact element 22 during the insertion period when only the first and second locking elements 31 and 32 are locked to each other. Only when the full insertion is present, that is, when the third locking element 33 or 33' is locked, will the inspection contacts 14 come into contact together.

Now in order to determine whether there is a correct contact, check the contact 14 or alternatively, the contact element 22 corresponding to the check contact 14 is energized, and determine whether there is a current between the check contact 14 and the corresponding contact element 22, or vice versa The current from the contact element 22 to the check contact 14. If this is the case, assume the correct insertion. If this is not the case, there is a contact interruption between the inspection contact 14 and the corresponding contact element 22. At this In this case, half insertion or incorrect insertion must be assumed. This incorrect insertion or even half insertion can be marked as the first locking point. In the second locking point, full insertion is achieved. In this case, the first and second locking elements 31, 32 or 51, 32 or 61, 32 are locked to each other, respectively. A gap is now provided which has a certain length in the insertion direction S which causes the second locking element 32 to move in the insertion direction S against the insertion direction S relative to the first locking element 31, 51 or 61, respectively. The gap is, for example, 0.9 mm to 1.0 mm. This is due to the sequence of functions during the insertion process of the check contacts 14 together with this. The locking of the first and second locking elements 31, 32 or 51, 32 or 61, 32 occurs first. This lock is performed by the stated amount, that is, between 0.9mm and 1.0mm before the end position (fully inserted state), in order to ensure that all functional contacts, that is, all plug contact elements 12, are indeed electrical Connected to the corresponding contact element 22, but the shorter inspection contact 14 is not electrically connected, and the inspection contact should never have touched the corresponding contact element 22 of the circuit board in-line connector 20 in this insertion position. This state is described in Figure 1c and Figure 2c, and Figure 3c and Figure 4c, respectively. Next, during assembly, the circuit board in-line connector 20 is completely pushed onto the circuit board 10. When the circuit board in-line connector 20 is completely pressed onto the base of the circuit board 10, that is, until it stops, all the plug contact elements 12 and the inspection contacts 14 are electrically connected (that is, contacted) to the corresponding contacts Element 22. Then, during assembly, an undesirable situation may occur, that is, the plug connector and/or the cable connected to the plug connector is pulled, so that the circuit board in-line connector 20 may be slightly detached from the plug contact piece 17 , That is, slightly separated from the circuit board 10. Therefore, the detachment occurs after the initial correct insertion. It may also happen that during the assembly of the circuit board in-line connector 20 on the circuit board 10, the second locking element 32 and the first locking element 31, 51, or 61 may indeed be locked respectively, but the circuit board in-line connector 20 is not It is inserted deep enough so that the inspection contact 14 and the corresponding contact element 22 are electrically connected to each other. During the assembly process, this insertion was determined and indicated as an interruption. Here, this is indeed a quasi-error that is also marked as such, because the contact element 22 of the circuit board 10 and the circuit board in-line connector 20 are correctly contacted-except for the check contact 14. During assembly, it is considered an error to check the non-contact of the contacts 14. In this case, the assembler must apply a corresponding pressure in the insertion direction S to completely press the plug connector 20 onto the circuit board 10 again. Obviously, especially in the case of a large number of such plug contact groups, such as plug contact groups installed in vehicles, this "re-adjustment" is a waste of time and is not ideal for assembling vehicles on the production line. of.

In order to avoid this situation, the present invention provides third locking elements 33, 33', which are in the form of further locking noses. In the fully inserted state, that is, when the plug connector 20 has been completely inserted into the circuit board 10 and all the contact elements 12, 14, 22 are electrically connected to each other, the third locking elements 33, 33' are respectively locked to the first and second The two locking components 31, 51, 61, 32, and fix the circuit board in-line connector 20 to the circuit board 10 as far as possible without gaps.

Therefore, the third locking element 33, 33' respectively causes the fixation in the fully inserted state, that is, the third locking point and the second locking point (depicted in Figure 1c, Figure 2c and Figure 3c, Figure 4c, respectively) are different in the assembly period make sure This means that the plug contact group is fully inserted, which can be identified by detecting the inspection contact 14 inserted. This state is shown in Figure 1d, where 1d is 3d and 2e is 4e. Therefore, the circuit board in-line connector is fixed on the circuit board 10. The fixing method is indeed such that even if shaking load or other mechanical load, such as vibration load or the like, the circuit board in-line connector 20 cannot be removed from the circuit board. 10 detach.

The correct insertion can be determined by energizing the inspection contact 14 or its corresponding contact element 22 in the circuit board in-line connector 20. Here, it is checked whether current is flowing between the check contact 14 and the corresponding contact element 22. If this is not the case, there is no correct insertion.

According to the present invention, this action causes the plug contact group to automatically check whether there is, for example, half insertion or incorrect insertion. If this situation is detected, the half insertion or incorrect insertion can still be corrected during the assembly process.

10: Circuit board

12: Contact element/plug contact element

14: Contact element/check contact

17: Plug contact piece

19: circuit board edge

20: circuit in-line connector

21: Shell

22: contact element

30: spring arm

31: The first locking element

32: second locking element

33: third locking element

33’: Third locking element

40: Insert the tongue

41: Edge

51: first locking element/opening

53: third locking element/opening

61: The first locking element

70: Groove

S: Insertion direction

Exemplary embodiments of the invention are depicted in the drawings and explained in more detail in the description below.

Figure 1a shows an isometric diagram of a first variant of the plug contact group according to the present invention, the plug contact group coming from a circuit board in-line connector and a circuit board that are not yet inserted;

Fig. 1b shows the plug contact group depicted in Fig. 1a in a state where the plug contact group is not fully inserted; and

Fig. 1c shows the plug connector according to Fig. 1b, the plug connector group is in a partially disconnected state, so as to illustrate the non-insertion of the check contacts;

Fig. 1d shows the plug connector group according to Figs. 1b and 1c, the plug connector group being in a fully inserted state in its end position;

Fig. 1e shows the plug connector group according to Fig. 1d, the plug connector group is in a partially disconnected state, so as to illustrate the complete insertion of all plug contacts;

Figure 2a shows an isometric diagram of a second variant of the plug contact group according to the present invention, the plug contact group coming from a circuit board in-line connector and a circuit board in an unplugged state;

Figure 2b shows the plug contact group depicted in Figure 2a in a state where the plug contact group is not fully inserted; and

Fig. 2c shows the plug connector according to Fig. 2b, the plug connector group is in a partially disconnected state, so as to illustrate that the check contacts are not inserted;

Fig. 2d shows the plug connector group according to Figs. 2b and 2c, the plug connector group being in a fully inserted state in its end position;

Fig. 2e shows the plug connector group according to Fig. 2d, the plug connector group is in a partially disconnected state, so as to illustrate the complete insertion of all plug contacts;

Figure 3a shows an isometric illustration of a third variant of the plug contact group according to the present invention, which comes from a circuit board in-line connector that is not yet inserted (the circuit board in-line connector is also Independent display) and circuit board;

Fig. 3b shows the plug contact group depicted in Fig. 3a in a state where the plug contact group is not fully inserted; and

Fig. 3c shows the plug connector according to Fig. 3b, the plug connector group is in a partially disconnected state, so as to illustrate that the check contacts are not inserted;

3d shows the plug connector group according to FIGS. 3b and 3c, the plug connector group is in a fully inserted state in its end position;

Fig. 3e shows the plug connector group according to Fig. 3d, the plug connector group is in a partially disconnected state, so as to illustrate the complete insertion of all plug contacts;

Figure 4a shows an isometric illustration of a fourth variant of the plug contact group according to the present invention, which comes from a circuit board in-line connector that is not yet inserted (the circuit board in-line connector is also Independent display) and circuit board; Figure 4b shows the plug contact group depicted in Figure 4a, the plug contact group in the state of not fully inserted; and Figure 4c shows the plug connector according to Figure 4b, the plug is connected The connector group is in a partially disconnected state to illustrate the non-insertion of the check contacts; Figure 4d shows the plug connector group according to Figures 4b and 4c, the plug connector group being fully inserted in its end position State; Figure 4e shows the plug connector group according to Figure 4d, the plug connector group is in a partially disconnected state, in order to illustrate the complete insertion of all plug contacts.

Domestic hosting information (please note in the order of hosting organization, date and number)

Foreign hosting information (please note in the order of hosting country, institution, date and number) None

10: Circuit board

12: Contact element/plug contact element

14: Contact element/check contact

17: Plug contact piece

19: circuit board edge

20: circuit in-line connector

21: Shell

30: spring arm

31: The first locking element

32: second locking element

33: third locking element

40: Insert the tongue

41: Edge

70: Groove

S: Insertion direction

Claims (17)

A plug contact group, comprising: a plug contact piece (17), the plug contact piece has a plurality of first contact elements (12, 14), the first contact elements are formed as parts of a circuit board (10) , And the first contact elements are arranged in the area of the edge (19) of a circuit board, and at least one of the first contact elements (12, 14) is formed as an inspection contact in an insertion direction (S) Point (14), the inspection contact has a length smaller than the remaining first contact elements, and the plug contact group has a plug connector, the plug connector has a plurality of second contact elements (22) , The second contact elements (21) are arranged in a housing (21), at least one of the contact elements (22) is set to electrically contact the inspection contact (14), wherein the At least one first locking element (31, 51) of a part of the circuit board (10) is arranged on the edge (19) of the circuit board, and at least one second locking element (32) is arranged on the housing, the The first and second locking elements are set to lock each other when the first contact element (12, 14) is completely contacted by the second contact element (22), and a third locking element (33, 53) is provided therein , The third locking element is formed as part of the circuit board (10), and the third locking element can be locked with the second locking element (32), the third locking element is arranged to be in the insertion direction (S) Spaced apart from the first locking element (31), so that by locking the third locking element (33, 53) to the second locking element (32), the In a complete contact state of the first contact element (12, 14) and the second contact element (22), the housing on the circuit board (10) is fixed as far as possible without gaps; the plug contact group It has a first locking point, a second locking point and a third locking point, wherein at least one of the first locking element (31) is locked to the at least one second locking element (32) in all three of the locking points ), and wherein in the first locking point, there is no second contact element (22) in electrical contact with the inspection contact (14), wherein in the second locking point, at least one second contact element (22) ) Is in electrical contact with the inspection contact (14), and in the third locking point, the third locking element (33, 53) is locked to the second locking element (32), all the first and second The contact elements (12, 14; 22) are in contact with each other, and the plug contact piece (17) and the housing (21) are fixed to each other. A plug contact group, comprising: a plug contact piece (17), the plug contact piece has a plurality of first contact elements (12, 14), the first contact elements are formed as parts of a circuit board (10) , And the first contact elements are arranged in the area of a circuit board edge (19), and at least one of the first contact elements (12, 14) is formed as a check contact in an insertion direction (S) Point (14), the inspection contact has a length smaller than the remaining first contact elements, and the plug contact group has a plug connector, the plug connector has a plurality of second contact elements (22) , The second contact elements are arranged in a housing (21), At least one of the contact elements (22) is set to electrically contact the inspection contact (14), wherein at least one first locking element (31, 31) formed as a part of the circuit board (10) 51) is arranged on the edge (19) of the circuit board, and at least one second locking element (32) is arranged on the housing (21). The first and second locking elements are set to be in the first The contact elements (12, 14) are locked to each other when completely contacted by the second contact element (22), and a third locking element (33') is provided therein, and the third locking element is arranged on the housing (21) , And the third locking element can be locked with the first locking element (31, 61), the third locking element is arranged to be spaced apart from the second locking element (32) in the insertion direction (S), So that by locking the third locking element (33') to the first locking element (31, 61), the first contact element (12, 14) and the second contact element (22) can be in a full contact state In, a fixation of the housing (21) on the circuit board (10) is reached as far as possible; the plug contact group has a first locking point, a second locking point and a third locking point , Wherein at least one of the first locking element (31) is locked to the at least one second locking element (32) in all three of the locking points, and wherein in the first locking point, there is no second contact element (22) Make electrical contact with the inspection contact (14), wherein in the second locking point, at least one second contact element (22) makes electrical contact with the inspection contact (14), and is in electrical contact with the third In the locking point, the third locking element (33') is locked to the first locking element (31, 61), all the first and second contact elements (12, 14; 22) are in contact with each other, and the plug contact piece (17) and the housing (21) are fixed to each other. The plug contact group according to claim 1 or 2, characterized in that the first contact element (12, 14) is arranged on the circuit board (10). The plug contact group according to claim 1, characterized in that the first and third locking elements (31, 33; 51, 53, 61) are formed on the circuit board as a part of the circuit board (10) (10) In or above. The plug contact group according to claim 4, characterized in that the first and third locking elements (31, 33) are arranged on an edge (41) in each case, which edge is transverse to the insertion direction (S ) And surround an insertion tongue (40), which is formed as a part of the circuit board (10). The plug contact group according to claim 4, characterized in that the first and third locking elements (51, 53, 61) are openings in the circuit board (10). The plug contact group according to claim 1 or 2, characterized in that the second locking element (32) is arranged on a spring arm (30), and the spring arm is arranged on the housing (21). The plug contact group described in claim 2, characterized by The second and third locking elements (32, 33') are arranged on a spring arm (70) which is arranged on the housing (21). The plug contact group according to claim 1 or 2, characterized in that the first, second and third locking elements (31, 32, 33') are lock hooks. The plug contact group according to claim 1 or 2, characterized in that the plug contact piece (17) has exactly one check contact (14). The plug contact group according to claim 10, characterized in that the inspection contact (14) is arranged in the center of the plug contact piece (17). The plug contact group according to claim 10 or 11 is characterized in that all remaining first contact elements (12) have the same length. The plug contact group according to claim 1, characterized in that the second contact elements (22) all have the same length in the insertion direction (S). The plug contact group according to claim 1 or 2, characterized in that the inspection contact (14) is formed so as to be short when the first locking element (31) is not locked to the second locking element (32) When at least one of ), the inspection contact is not in electrical contact with a second contact element (22). The plug contact group according to claim 1 or 2, characterized in that the first contact element (12, 14) contacts the surface on the circuit board (10), and the second contact element (22) is a spring contact element . A method for checking the at least one first locking element (31) of a plug contact group according to one of claims 1 to 14 against the at least one second and third locking elements (32, 33) A locking method, which includes the following steps:-energize a check contact (14);-check whether there is a current flowing between the check contact (14) and a second contact element (22), and- When an electric current is detected, it is determined that a lock exists. A method for checking the at least one first locking element (31) of a plug contact group according to one of claims 1 to 11 against the at least one second and third locking elements (32, 33) A locking method, the method comprising the following steps:-energizing a second contact element (22), the second contact element being configured to make electrical contact with an inspection contact (14);-checking the inspection contact ( 14) Whether there is a current flowing between the second contact element (22) and-when a current is detected, it is determined that a lock exists.

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